<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
</head>
<body>
<form action="/cgi-bin/senior1-8.py" method="post" target="_blank">
<select name="dropdown">
<option value="runoob" selected>菜鸟教程</option>
<option value="google">Google</option>
</select>
<input type="submit" value="提交"/>
</form>
</body>
</html>